Comdial was acquired by Vertical Communications in 2005, and active development on most Comdial product lines slowed to a trickle within a few years. If you're still running an Impact, DSU II, or ExecuTech system, you're operating on borrowed time — and overpaying for the privilege. We help Comdial customers migrate to modern cloud VoIP every week.
Comdial Corporation was acquired by Vertical Communications in March 2005, ending Comdial as an independent brand. While Vertical continued to support installed Comdial systems for a number of years, active development effectively ceased and most product lines moved into long-tail maintenance mode.
Replacement parts for Impact and DSU II systems have been scarce since the mid-2010s. The pool of certified Comdial technicians is shrinking every year as the people who learned these systems in the 1990s and early 2000s retire. Most customers running Comdial today are paying a local IT shop a premium to keep an unsupportable system limping.
The right move isn't to find another Comdial tech — it's to retire the entire box. Modern cloud VoIP does everything a Comdial Impact did, with no on-prem equipment, half the monthly cost, and no maintenance contract.
If you're running one of these, we have a playbook for your migration.
Step-by-step. No surprises. Your existing Comdial system stays operational the entire time.
Tell us your model, the number of stations, your trunk type (analog/T1/PRI), and which features you actually use day-to-day.
Hunt groups, intercom dialing patterns, voicemail boxes, auto-attendant menus — we rebuild it in voip.army so day-one feels identical to your callers.
Every line currently on your Comdial system ports to voip.army for free. The cutover is sub-5-second — no calls lost.
Comdial digital phones won't work with VoIP. We swap to Yealink/Grandstream IP phones at cost, or your team uses the mobile and desktop apps and you skip desk phones entirely.
Decommission the KSU. Stop paying the local tech who's been keeping it alive. Recycle the equipment.
"We had a Comdial Impact in service since 1998. Our local tech retired in 2022 and we couldn't find a replacement willing to even look at it. voip.army migrated us in two weeks — apps for everyone, two desk phones for reception, and we cut our phone bill in half. Should've done this five years ago."
The questions we get from Comdial customers considering the move. If yours isn't here, ask.
Talk to migration team30-day free trial. Free migration assistance from a team that's done this hundreds of times. Your Comdial stays running the entire time — no risky big-bang cutover.